Leopold toback



(No Model) L. TOBAOK. LOOK.

No. 598,211. Patented Feb. 1., 1898.

WITNESSES:

her 29, 1889, to Clarence M. Stiner.

lhvirnn STATES PATENT rrion.

LEOPOLD TOBAOK, OF BROOKLYN, NEW YORK, ASSIGNOR TO THE WATER OVERFLOW PREVENTIVE COMPANY, OF NEW YORK.

LOCK.

SPECIFICATION forming part of Letters Patent No. 598,211, dated February 1, 1898.

Application filed. May 20, 1897. Serial No. 637,470. No model.)

To all whom it may concern:

Be it known that I, LEOPOLD TOBAOK, a citizen of the United States, residing at Brooklyn,in the county of Kings and State of New.

York, have invented certain new and useful Improvements inValve-Locks, of which the following is a full, clear, and exact description.

This invention relates to valve-locks, and has special reference to that class of locks described in Patent No. 413,794, issued Octo- The invention of the said patent is intended to prevent water-overflows, gas-leaks, or the escape of other commodities supplied through conduits'to a building while the building is unoccupied, as at night. This is accomplished under the patent referred to by a lock in which during the day the front-door key of the building is entrapped and cannot be released until the lock and key are conveyed i to the valve controlling the supply of water or other commodity and there used to look a valve in its shut-off position. Having thus manipulated the valve, the key can be removed from the lock and afterward used to lock the door of the building. The valve described in said patent was an ordinary cook or faucet controlled by a handle or lever which moved through an arc of ninety degrees in traveling from one limit to the other of its movement. With such a valve the holder or device in which the lock is deposited could be fixed stationarily adjacent to the end of the movement of the valve-handle, and the valve-handle in moving to the closed position would engage directly with the holder and the look.

In order to apply the invention to a globe, gate, or other valve in which the stem in rotating moves longitudinally and is oper-. ated by a hand-wheel, a fixed lock-holder cannot conveniently be used, because the hand-wheel in moving the valve to its fullyclosed position usually makes more than one rotation, and the lug or other device carried by it for engagement with the lock and lock-holder would interfere with the lockholder and the wheel be prevented from turning.

In order to permit the wheel to turn as Thus I will describe my invention in detail with reference to the accompanying drawings, in which Figure 1 is a side elevation of a valve, lockholder, and lock, showing the valve locked in its shut-off position. Fig. 2 is asimilar view showing the valve open and the lock removed from the holder. Fig. 3 is aviewof the lock with the keyentrapped therein, and Fig. 4 is a section on line a: w of Fig. 1.

A is the valve, CL the valve-stem, and a the hand-wheel on the stem, by which the latter is rotated to open and close the valve, the stem in .rotating moving longitudinally in the usual manner by reason of its screw-threaded engagement with the valve-body. The

hand-wheel carries on its rim a fixed lug or.

loop a projecting radially outward.

Adjacent to the valve is fixedly mounted a heavy bracket 13 in the form of a fork, the opening between the two legs Z) of which is in the same plane with the stem at. Pivoted between the arms of this fork is a bar 0, carrying at its free end a cup-shaped lock-holder c. The bar 0 fits accurately in the space between the arms of the fork b and is mounted upon a strong pivot c at the base of the fork. The arm is adapted to swing'through aradial plane including'the valve-stem. In the side of the cup-shaped lock-holder is an opening 0 through which the lug a is adapted to pass.

D is the lock provided with an opening. cl in its side and constructed to entrap the key when its bolt 01 is in its withdrawn position. This lock is adapted to be deposited in the lock-holder c in such a position that its opening 01 will register with the opening c in the holder.

The operation is as follows: In the daytime,

or when the valve is supposed to be open, the key is entrapped in the lock and the valve is in the condition shown in Fig. 2. Now the key cannot be removed from the'lock to be used elsewherefor instance,to lock the front door of the buildingand consequently at night the key, with the look upon it, must be taken to the valve, where it is inserted in the lock-holder c in position to register the two openings 01 and 0 Then the valve-Wheel is rotated until the conduit is entirely shut off, at which time the lug a has been lowered and swung around to a point where it will enter the openings 0 and d of the holder and lock, respectively, when the holder is swung on its pivot toward the wheel. If the lug on the hand-wheel is brought opposite the holder without having rotated the wheel a sufficient number of times to entirely close the conduit, the lug will not enter the holder, nor will it enter it unless the lugis brought to the proper radial position. \Vhen the holder is swung over, so that the lug enters the opening in the lock, the lug by the peculiar mechanism of the lock releases the bolt 01, so that the key may turn it. Turning the key throws the bolt into engagement with the lug and permits the key to be withdrawn from the lock.

The key may then be used upon the lock of When the key the front door or elsewhere.

valve-wheel cannot be rotated in either direction.

Having thus described my invention, I claim- 1. The combination of a valve and its controlling hand-Wheel, of alock-holder mounted adjacent thereto and movable into and out of the path of movement of the hand-wheel, a lock adapted to be deposited in or upon said holder, the hand-wheel of the valve being provided with a lug which is adapted to be brought into engagement with the holder and the lock when the holder is moved into the position for such engagement, substantially as described.

2. The combination of a valve and its controlling hand-wheel, of a lock-holder mounted upon the end of an arm which is pivoted to swing in a radial direction with respect to the hand-Wheel a lock adapted to be deposited in or on said holder and a lug carried by the hand-Wheel of the valve and adapted to engage with the holder and the look when the holder is swung toward the hand-wheel, substantially as described.

In testimony whereof I subscribe my signature in presence of two Witnesses.

LEOPOLD TOBAOK.

Witnesses:

WM. A. ROSENBAUM, HENRY BAILEY. 

